Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

How can you identify a proportional relationship from a table?

Back

A table represents a proportional relationship if the ratios of the corresponding values are constant and the table passes through the origin.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

How do you find the unit rate from a given cost and quantity?

Back

Divide the total cost by the quantity to find the cost per one unit.

Front

If 3 pounds of apples cost $3.60, what is the cost per pound?

Back

$1.20 per pound.

Front

What does it mean if a table does not pass through the origin?

Back

It means that the relationship is not proportional.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio between two proportional quantities.

Front

If the constant of proportionality is $9, what does that mean in a real-world context?

Back

It means that for every unit of the first quantity, the second quantity increases by $9.

Front

What is the relationship between hours worked and money earned in a proportional relationship?

Back

The ratio of money earned to hours worked is constant.

Front

If a worker earns $12 per hour, how much will they earn for 5 hours?

Back

$60.